After the letter wins admiration, the audience asks about the elder's origin and home:
«مِنْ أَيِّ الشُّعُوبِ نِجَارُهُ وَفِي أَيِّ الشِّعَابِ وَجَارُهُ»
From what people is his lineage, and in what locality is his dwelling?
Nijār here denotes stock or descent; wijār a dwelling or shelter. Shuʿūb / shiʿāb sound alike but refer to peoples and to valleys or passes respectively.
The questions extend the public examination into a personal one. A remarkable speaker's identity becomes as interesting to the gathering as his performance.